Home / 82,276.16-123,408.96-26,115.20

Finding the Fourth Proportional to 82,276.16, 123,408.96 and 26,115.20

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Solution

The fourth proportional to 82,276.16, 123,408.96 and 26,115.20 is: 39,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,276.16 : 123,408.96 = 26,115.20 : x
  2. Step 2: Convert to fraction form
    82,276.16/123,408.96 = 26,115.20/x
  3. Step 3: Cross multiply
    82,276.16x = 123,408.96 × 26,115.20
  4. Step 4: Simplify right side
    82,276.16x = 3,222,849,672.19
  5. Step 5: Solve for x
    x = 3,222,849,672.19/82,276.16
  6. Step 6: Final answer
    x = 39,171.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.